Voice reporting apparatus and the like



l-wb sa Pff July 2, 1957 H. UNGARsoHN 2,798,122

voIcE REPORTING APPARATUS AND THE LIKE Filed oct. 2, 195s 5 I 759:3 /gf/A/mesa//f'u Y. A27a/51W@ y a@ n Wawy United States Patent C M VOICEREPORTING APPARATUS AND THE LIKE Harry Ungarsohn, Floral Park, N. Y.

Application October 2, 1953, Serial No. 383,731

3 Claims. (Cl. 179-188) The present invention relates to voice reportingapparatus and more particularly to a type adaptable to be held in handand having a mask on a sound-muting device so that dictation is silent.This apparatus may include a microphone for connection in circuit withan electrical recording means or merely a mouth-piece for a mechanicalrecording means or other voice-operated means.

The principal object of this invention is to provide a novel andimproved apparatus of the character mentioned which eciently stities thesound uttered by the user so it is unheard by anyone near him and thoughthe mentioned mask encompasses his mouth and nose, normal breathing isin no manner interfered with.

Another object hereof is to provide a novel and improved apparatus ofthe nature set forth, affording means to correct to silence in the eventits operating condition needs it.

A further object of this invention is to provide a novel and improvedconstruction for apparatus of the kind described, which is simple instructure, reasonably cheap to manufacture, easy to use, convenient andlight to hold and carry and efcient in performing the functions forwhich it is designed.

Other objects and advantages will become apparent as this disclosureproceeds.

In the accompanying drawings forming part of this specification, similarcharacters of reference indicate corresponding parts in all the views.

Fig. 1 shows a longitudinal view of a voice reporting or similarly usedapparatus embodying the teachings of this invention. Part of this Viewis in section and the apparatus is shown in use.

Fig. 2 is the end view thereof showing the mask which is included inthis apparatus.

Fig. 3 is the other end view thereof.

Fig. 4 is a central longitudinal section through Fig. 1 and may bedeemed the section taken at lines 4-4 in Fig. 2.

Fig. 5 is a face view of one of the partition members shown in Fig. 4.

Fig. 6 is an exploded sectional view of structure permitting the casingto be sectional so that it may be provided with any desired number ofchambers in its build-up.

In the drawings, the numeral designates a tubular casing having a facialmask 16 mounted on one end to encompass the mouth and nose of the user17; such mask being of soft rubber composition as is well known in thisart, and is provided with an opening 18 communicative with said casing.This casing is divided into a number of chambers 19, 20, 21 along itslength by the spaced partition members 22, 23, 24 and the end 25. Thesepartitions are preferably resiliently mounted by having them in theannular soft rubber channel rings 26 which are secured on the inner wallof said casing. Through each of said partitions and the said end wall25, is mounted a tubular member yas 27 which is pref- Patented July 2,1957 erably flared at intake end, meaning the end thereof nearest theuser 17. Such tubular members may extend in any direction, but it ispreferred that they shall be in angular relation so that one empty intothe other with some space between them along the casing 15.

Each of the chambers may be provided with an opening for drainage,filled by a removable cork 28. When the partitions are circular discsrotatably mounted in the annular channels 26 and provided on the facewith a series of spaced indentations 28, they may be turned to shift thepositions of the tubular members 27, 29, 30, respectively by insertionof a suitable tool through said holes when uncorked. The spoken sound ismuted in its travel through the chambers. Particular angularrelationships of the several tubular members 27, 29, 30, 31 aid thissilencing action, so that the spent voice at exit end of tubular member31 is practically of nil sound intensity.

For use of the described apparatus for voice reporting and otherdictation where an electrical recording means is employed, itsmicrophone 32 is mounted on a seat therefor Within the mask cavity, at aposition preferably below the opening 18 and tilted forwardlydownwardly. An electrical switch 33 ofthe push-button type, to controlthe microphone circuit determining recording machine operation, isconvenient when placed so that its operating button 33 extends from therear end member 25. The lead Wires 34 from the microphone and the leadwires 35 from said switch, are suitably connected in circuit not shown.

For use with mechanical recording means or other voice-operatedapparatus benefited by or requiring voice silencing, the mouth-piece 36thereof is mounted in the aforesaid microphone position. In suchinstance, there would be the exible tubular connection from suchmouth-piece as indicated by the numeral 37, to voice intake of theassociated system.

If desired, provision may be made to have the chamber structure ofannexed sections or to add on additional voice-deadening chambers bycoupling structure as for instance shown in Fig. 6, where the tubularmembers 38 and 39 are telescopic and suitable set-screw means areprovided to effect assembly.

The casing 15, its partitions and tubular members carried by the latter,may be of plastic, metal sheeting, cardboard or other suitable material.If desired, the partitions as shown at 40 may be of rubber and the maskof a rigid material as operating conditions and price considerations maydictate.

It is of importance to note that in use, though the mask-end is closedby the face of the operator, there is no air cut-off and hence nointerference with the normal breathing of the user and no necessity toremove the mask from the face in order to breathe.

This invention is capable of numerous forms and various applicationswithout departing from the essential features herein disclosed. It istherefore intended and desired that the embodiments shown shall bedeemed illustrative and not restrictive and that the patent shall coverall patentable novelty herein set forth; reference being had to thefollowing claims rather than to the specific description herein toindicate the scope of this invention.

I claim:

1. In an apparatus to stifle sound waves of speech, an elongated tubularcasing, a mask for at least the mouth of a person, mounted across oneend of the casing and having an opening into the casing, means toreceive voice sound waves positioned within the mask, spaced from saidopening, spaced wall members partitioning the casing whereby chambersare formed therein in succession therealong and open-ended tubularmembers, positioned one through each of said partition members wherebyeach tube lies within two such chambers respectively; the ends ofsuccessive tubular members being in spaced relation along the casing;the longitudinal axes of at least two successive tubular members beingin angular relation and at least one of the partitions being rotatablein its plane whereby such angular relation may be altered.

2. The `apparatus as defined in claim 1, wherein each rotatablepartition member is provided with tool-engageable elements on itssurface; the casing having a closable opening whereby a tool may beinserted therein to engage one of said elements to shift said rotatablepartition a part turn.

3. The yapparatus as dened in claim 1, wherein each rotatable partitionis mounted in an annular channel member mounted on the inner surface ofthe casing; such channel member being of resilient material.

References Cited in the file of this patent UNITED STATES PATENTS1,227,363 Baird May 22, 1917 1,345,717 Thomas July 6, 1920 1,874,326Mason Aug. 30, 1932 2,625,615 Webb Jan. 13, 1953 2,670,054 Tuttle Feb.23, 1954 FOREIGN PATENTS 26,779 Great Britain 1909 133,841 Austria June26, 1933

